I have a 500 mercury 50hp although it has a kiekhaefer front plate it has no k number on the flywheel and just seems to new for an old un , serial number is 9155911 help cheers
Welcome to iboats. Help with what? I'm guessing you want to know what year it is? It's a 1977 from here. 35 years old could be considered old. Is that what you need?